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- Objective:To introduce a method of mesio-translation of lower second molar. 目的:介绍一种下颌第二磨牙近中平移技术。
- Labial (buccal) inclination was observed in all teeth except the lower first molars and the lower second molars. 上颚皆为唇(颊)侧倾斜,最大唇(颊)侧倾斜为正中门齿。
- In this article a new technique using the NiTi wire to upright the impacted lower second molar is introduced. 而在进行臼齿扶正时除考虑矫正装置之效率,方便性及病患舒适性之外,尚需考虑如何控制锚定,以避免造成锚定牙齿不必要的前移或挺出。
- Despite of food impaction and proximal caries of first permanent molar, impacted lower second molar also affect the normal function of occlusion. 除了影响正常咬合功能外,常因食物阻塞而伴随大臼齿间软组织发炎或第一大臼齿远心侧龋齿。
- Objective To investigate the displacements and the stress distributions of a mandibular second molar. 目的了解下颌第二恒磨牙不同载荷下近中移动时的位移及应力分布情况。
- Objective:Clinical Analysis on 52 samples with food impaction of second molars after PFM restorations,to provide some useful suggestions. 目的:通过对52例第二磨牙区烤瓷冠修复后出现食物嵌塞病例的分析,为该区位的修复提供一定的临床建议,增加修复的成功率。
- To reinforce anchorage with second molar can prevent anchorage teeth movement mesially during canine distal movement. 将第二双尖牙、第一、第二磨牙连成整体,可减小尖牙远中移动时的支抗消耗。
- The spaces of lower first molar were all closed using mesiotranslation of lower second molar. 应用第二磨牙近中平移技术关闭第一磨牙拔牙间隙。
- Mesial tipping occurred in all teeth except the upper second molars, the lower central incisors, and the lower lateral incisors. 测量牙冠舌侧近远心倾斜与颊舌侧斜角度,结果显示,上颚除第二大臼齿以外,其他牙齿皆为近心倾斜,最大近心倾斜为犬齿。
- This paper reports the root separation and tunneling therapy for the furcation treatment of mandibular second molar with narrow furcation entrance diameter. 本文提出有关下颚第二大臼齿根叉齿槽骨病变合并根叉入口径狭窄的牙齿分割合并牙冠隧道穿通术的牙周补缀治疗。
- When using the attachment prostheses to restore the type of the second molar distal-extension for the patient, we can use one teeth as abutment. 用该附著体修复第二磨牙末端游离缺损时,可采用单基牙。
- The results of our investigation were as follows: the lower second molars had the highest percentage of caries followed by the upper central incisors in the deci-duous teeth. 其结果如下:在每个年龄层,龋齿在上颚比下颚多,而下颚孚牙第二大臼齿龋率最高,其次是上颚孚牙中切齿。
- We chose nonextraction therapy to distalize maxillary second molars with facebow and headgear.The final result were excellent occlusal relationship and improved facial esthetic. 本病例在患者不愿拔牙及高度配合意愿下,将上颚第二大臼齿以面弓加上头帽往远心移动,并配合固定式之矫正装置,完成非拔牙的矫正治疗。
- Result:the three-dimensional finite element method models of the maxillary second molar was constructed on the computer, which had 21809 nodes and 14449 tetrahedrons elements. 结果:在计算机上建立了上颌第二磨牙三维有限元生物力学分析模型,总节点为21809个,4面单元数为14449个。
- CONCLUSIONS: When using the attachment prostheses to restore the type of the second molar distal-extension for the patient, we can use one teeth as abutment. 结论:用该附著体修复第二磨牙末端游离缺损时,可采用单基牙。
- A case report is presented on a26- year-old man had a Class lll malocclusion with severe facial asymmetry, unilateral cross-bite, missing of multiple teeth and mesial tilting of multiple second molars. 摘要本病例报告为一26岁骨性三类异常咬合之成年患者,同时伴随有颜面歪斜、侧错咬、颗牙齿缺失及多颗臼齿近心倾倒。
- Malalignment of the second molars occurred in 16.98% (9/53) cases, such as buccally or lingually eruption resulting in buccal crossbite or lingual crossbite, rotations, mesial and distal impaction. 第二磨牙完全萌出及大部分萌出(已有(牙合)接触)的53例中,16.;98%25(9/53)的患者在萌出过程中曾出现错位,包括第二磨牙颊舌向错位、扭转、近远中阻生等。
- A case report is presented on a 26-year-old man had a Class lll malocclusion with severe facial asymmetry, unilateral cross-bite, missing of multiple teeth and mesial tilting of multiple second molars. 摘要本病例报告为一26岁骨性三类异常咬合之成年患者,同时伴随有颜面歪斜、单侧错咬、多颗牙齿缺失及多颗臼齿近心倾倒。
- Identifying and treating the second mesiobuccal root canal in maxillary second molars is improved by modified access preparation and probing the fissure or groove between the mesiobuccal and palatal canal orifices. 改良髓腔入口和探查近中颊根根管口与腭根根管口之间发育沟或暗线的方法,有利于发现和治疗上颌第二磨牙近中颊根第二根管。
- Excessive mesial-axial inclination of the mandibular second molar or inadequate posterior arch length cause the mandibular second molar to become impacted against the distal contour of the first permanent molar. 摘要下颚牙弓空间不足或第二大臼齿本身过度的近心轴向倾斜,常造成第二大臼齿前倾和阻生。